Car-truck.



No. 700,425. 7 Patente d May 20, 1902. n. n. KEITHLEY.

CAB TRUCK.

(Application filed Nov. 27, 1901.)

(No Model.)

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UNITED STATES PATENT OFFICE.

HERBERT R. KEITHLEY, OF BUFFALO, NEW YORK.

CAR-TRUCK.

SI-ECIFICATION forming part of Letters Patent No. 700,425, dated May 20,1902. Application filed November 27, 1901. derial No. 83,857. (Nomodel.)

To all whgm it may concern;

Be it knownthat I, HERBERT R. KEITHLEY,

' a citizen of the United Statcs, residing at Buf falo, in the county ofErie and State of New York, have invented-new and useful Improvements inCar-Trucks, of which the following is a specification.

This. invention relates more particularly to the frame construction ofdiamond car-trucks. My invention has for its object to reduce the number.of parts of the truck-frame to a mini mum and to so construct theconnected frame members as to increase their riveting area or surfaces,thereby correspondingly increasing Fig. 1. i

The upper arch-bar is preferably constructed webs, as most clearlyshownin Fig. 2.

5o. tions of the lower arch-bar.

Like letters of reference refer to like parts in both figures. v

A is the upper arch-bar, and .B the lower arch-bar, of each side. frameof the truck.

of pressed steel and composed of a'longit'ndinal top plate "ct, twovertical webs a,- extending downwardly from opposite edges of said topplate,- and horizontal fianges'a projecting outwardly from the loweredges of said webs and flanges also preferably extend around the ends ofthe upper arch-bar, as shown at a Fig. 2. 1 r

In the construction shown in the drawings the crown on the centralportion of the upper arch-bar is deeper than its end portions a whichlatter are horizontal, and the portions thereof between thedeep middleportion and the shallow end portions gradually increase in depth towardthe middle portion, as shown in Fig. 1.

The lower inverted arch-bar B may consist of an ordinary solid bar, andits horizontal end portions are secured to the under side of thecorresponding portions of the upper archbar by vertical rivets, whichpass through the flanges a of theupper bar and the end por- Fig. 2 is anend view of the samej These,

0 represents the usual axle-boxes.

D is the pedestal tie-bar, and E vertical tiebolts passing through thecontiguous ends of the two arch-bars and the pedestal tie-bar.

F is the transom, which is preferably constructed of a single blank ofpressed steel and composed of a liorizontal'bottom plate f and parallelwebs f, extendingupwardly from opposite edges of said plate and eachprovided at its upper edge with an outwardly-extending flange f The websf are preferably cons nected together at the ends of the transom by"tie-plates g, which connect; both flanges of the transom and both,flanges of the upper arch-bar, theseplates being secured to said flangesby bolts or rivets h. The end portions of the transom are arrangedbetween the upper and lowerarch-barsof the side frames and are rigidlysecured to the lower arch-bars.

by bolts or rivets i, which pass through said bars and the bottom plate"f of the transom,

t, which pass through the tie-plates g, of the transom and the lateralflanges a of the upper arch-bar.

In diamond car-trucks of the ordinary 'con ,struction the horizontal endportions of the and to the upper arch-bars by'bolts or rivets I upperand lower arch-bars are connected together at each end by but twovertical bolts, which receive all of the. shearing strains. Under heavyloads these bolts gradually become bent from such shearing strains,causing a permanent set or downward deflection affords a similar largeriveting area for con- 7 nection to the side frames, andby forming thesame in asingle piece its strength and stiffness are increased and thenumber of parts is reduced.

J is the bolster, which is supported on the transom by springs K,arranged within the transom at the ends of the bolster and resting uponplates 70, which in turnrest upon the bottom plate of the transom. Thebolster is composed of parallel side Webs j, which haveoutwardly-extending bottom flanges j and inwardly-extending top flanges7' a bottom tie-plate, which is arranged beneath and secured to thebottom flanges j by rivets, and a top tie-plate, which connects the sidewebs and is secured to the inwardly-extending top flanges by rivets. Thebolster is preferably provided at each end with a pair of bentguideplates j which are riveted to the side webs above the outwardlyextending bottom flanges. These guide-plates bear on the inner sides ofthe transom-webs and guide the bolster in its movement therein.

I claim as my invention- 1. A side frame for diamond ear-trucks having alower arch-bar, and an upper arch-bar formed from a single piece ofmetal, and composed of a longitudinal top plate and vertical websextending downwardly from the edges of said plate and provided at theirlower edges with outwardly-extending flanges which are riveted to theend portions of the lower archbar, substantially as set forth.

2. A side frame fordiamond car-trucks having a lower arch-bar, and anupper arch-bar formed from a single piece of metal, and composed of alongitudinal top plate and vertical webs extending downwardly from theedges of said plate and provided at their lower edges withoutwardly-extending flanges which extend around the ends of the bar andwhich are riveted to the end portions of the lower arch-bar,substantially as set forth.

3. Aside frame for diamond car-trucks having a lower arch-bar, and anupper arch-bar formed from a single piece of metal and having its middleportion constructed of greater depth than its end portions, and composedof a longitudinal top plate and vertical webs extending downwardly fromthe edges of said plate and provided at their lower edges withoutwardly-extending flanges which are riveted to the end portions of thelower arch-bar, substantially as set forth.

4:. The combination with the side frames of a car-truck each having anupper arch-bar or compression member formed from a single piece of metaland composed of a longitudinal top plate and vertical webs extendingdownwardly from the edges of said plate and provided at their loweredges with outwardly-extending flanges, of a transom composed of abottom plate, parallel webs extending upwardly from the edges of saidplate and formed integral therewith and provided at their upper edgeswith outwardly-extending flanges, substantially as set forth.

5. The combination with the side frames of a car-truck each having anupper arch-bar or compression member formed from a single piece of metaland composed of a longitudinal top plate and vertical webs extendingdownwardly from the edges of said plate andprovided at their lower edgeswith outwardlyextending flanges, of a transom composed of a bottomplate, parallel webs extending upwardly from the edges of said plate andformed integral therewith and provided at their upper edges withoutwardly-extending flanges, and plates which are bolted or riveted tothe flanges of the transom-webs and to the flanges of said upperarch-bars, substantially as set forth.

Witness my hand this 18th day of November, 1901.

HERBERT R. KEITHLEY.

\Vitnesses:

CHAs. W. PARKER, CLAUDIA H. BENTLEY.

